() are numerous quincunx like sacs in the lateral wall of the alveoli, which are the common openings and channels of several alveoli inward.


() are numerous quincunx like sacs in the lateral wall of the alveoli, which are the common openings and channels of several alveoli inward.

正确答案:The alveoli sacs


Tag:动物解剖生理 时间:2021-12-25 22:23:24